Conversion methods provided by JDK are not used anymore for many reasons.

This call is not required before close() and it will prevent closing of writer
if write fails for some reason.

Add JdbcPreparedStatement.executeLargeUpdate() with implementation delegating to old internal method

When an unsupported type is passed to getObject(int|String, Class) the
error message always says that "java.lang.Class" is unsupported instead
of the actual type.